My Ex's First Love Is My Biggest Ally

A powerful CEO falls hard for a rising actress, but his mother refuses to accept their romance. Desperate to break them apart, she summons her son’s former first love and orders her to win him back. Everyone expects a brutal love triangle—but the returning ex has other plans. Instead of stealing his heart, she becomes their secret ally, helping the couple overcome every obstacle. What happens when the woman meant to destroy their love becomes the one who saves it?